Clean up some build warnings (#2929)

* Replace deprecated rememberPlainTooltipPositionProvider

* Remove superfluous when branch

This when is marked as exhaustive.

* Replace deprecated LibrariesContainer call

AboutLibraries now wants us to produce the libraries ourselves.

* Replace deprecated ClipboardManager with Clipboard

Clipboard uses suspend functions, hence the coroutine scope addition.

* Use multi-dollar strs to simplify GraphQL queries

These have been available since Kotlin 2.1.

* Remove various redundant casts & conversions

- WebViewScreenContent: loadingState is in the LoadingState.Loading
  branch, no need to cast at all
- Bangumi: username is not modified, make val
- Kavita: token is already a String
- PagerViewerAdapter: insertPageLastPage is already null-checked
- PagerViewerAdapter: use reified filterIsInstance
- ReaderViewModel: chapter IDs are already Longs
- CloudflareInterceptor: webview is smart-cast to non-null here

* Replace deprecated MenuAnchorType

Literally just a typealias for ExposedDropdownMenuAnchorType anyway.

* OptimizeNonSkippingGroups is enabled by default

* Suppress shadowing warning

This is explicitly intentional according to the KDocs.

* Migrate Context Receivers to Context Parameters

Requires changing the compiler arg, but that is part of the migration:

https://blog.jetbrains.com/kotlin/2025/04/update-on-context-parameters

Apparently, the only visible change is that names are required now.
"_" can be used for anonymous context parameters.

* Fix expression bodies with explicit return

Naming conflict resolved by aliasing.

From 2.4/2.5 onward, these will only be allowed with explicit return
types, or have to be turned into a block body. I opted for the latter
since the function is reasonably dense already.

see: https://youtrack.jetbrains.com/issue/KTLC-288

* Suppress deprecation of non-AutoMirrored icons

We use these arrows for navigation in the Upcoming screen.
I strongly doubt the AutoMirrored versions would make sense for our
use-case.

* Explicitly opt-in to new annotation default rules

affects the following annotated value-parameters:
- Preference.SliderPreference.steps (`@IntRange`)
- ReaderViewModel.State.brightnessOverlayValue (`@IntRange`)
- ReadingMode.iconRes (`@DrawableRes`)
- MigrationListScreenModel.Dialog.Progress.progress (`@FloatRange`)

see: https://youtrack.jetbrains.com/issue/KT-73255
see: https://github.com/Kotlin/KEEP/blob/change-defaulting-rule/proposals/annotation-target-in-properties.md

Warning message was the following:

    This annotation is currently applied to the value parameter only, but in the future it will also be applied to field.
    - To opt in to applying to both value parameter and field, add '-Xannotation-default-target=param-property' to your compiler arguments.
    - To keep applying to the value parameter only, use the '@param:' annotation target.

app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderViewModel.kt

@@ -501,7 +501,7 @@ class ReaderViewModel @JvmOverloads constructor(
      * if setting is enabled and [currentChapter] is queued for download
      */
     private fun cancelQueuedDownloads(currentChapter: ReaderChapter): Download? {
-        return downloadManager.getQueuedDownloadOrNull(currentChapter.chapter.id!!.toLong())?.also {
+        return downloadManager.getQueuedDownloadOrNull(currentChapter.chapter.id!!)?.also {
             downloadManager.cancelQueuedDownloads(listOf(it))
         }
     }
@@ -649,7 +649,7 @@ class ReaderViewModel @JvmOverloads constructor(
         viewModelScope.launchNonCancellable {
             updateChapter.await(
                 ChapterUpdate(
-                    id = chapter.id!!.toLong(),
+                    id = chapter.id!!,
                     bookmark = bookmarked,
                 ),
             )

app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/pager/PagerViewerAdapter.kt

@@ -123,7 +123,7 @@ class PagerViewerAdapter(private val viewer: PagerViewer) : ViewPagerAdapter() {
 
         // Will skip insert page otherwise
         if (insertPageLastPage != null) {
-            viewer.moveToPage(insertPageLastPage!!)
+            viewer.moveToPage(insertPageLastPage)
         }
     }
 
@@ -194,7 +194,7 @@ class PagerViewerAdapter(private val viewer: PagerViewer) : ViewPagerAdapter() {
     }
 
     fun cleanupPageSplit() {
-        val insertPages = items.filterIsInstance(InsertPage::class.java)
+        val insertPages = items.filterIsInstance<InsertPage>()
         items.removeAll(insertPages)
         notifyDataSetChanged()
     }